package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        // 将页面提交的密码进行MD5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        // 根据页面提交用户名username，查询数据
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee empId = employeeService.getOne(queryWrapper);
        // 判断
            // 如果没有查询到，
        if (empId == null){
            return R.error("登录失败");
        }
            // 密码对比，如果密码不一致，则返回失败结果
        if (!empId.getPassword().equals(password)){
            return R.error("登录失败");
        }
            // 查看员工状态，员工禁用，则返回员工已禁用结果
        if (empId.getStatus() == 0){
            return R.error("员工已禁用");
        }
        // 登录成功，将员工id存入Session, 并返回登录成功结果
        request.getSession().setAttribute("employee",empId.getId());
        // 返回结果
        return R.success(empId);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //1. 清理Session中的用户id
        request.getSession().getAttribute("employee");
        //2. 返回结果
        return R.success("退出成功");
    }

    /**
     * 员工分页条件查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page = {},pageSize = {},name ={}",page,pageSize,name);

        // 创建分页构造器
        Page pageInfo = new Page(page, pageSize);
        // 创建条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
            // 添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
            // 添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        // 调用service方法，执行方法
        employeeService.page(pageInfo,queryWrapper);
        // 返回结果
        return R.success(pageInfo);
    }

    /**
     * 新增员工
     * @param request
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工,员工信息：{}",employee);
        // 设置初始密码123456，并进行MD5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        // 执行添加方法
        employeeService.save(employee);
        // 返回结果
        return R.success("新增员工成功");
    }

    /**
     *根据员工id修改员工信息
     * @param request
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());
        // 执行修改方法
        employeeService.updateById(employee);
        // 返回结果
        return R.success("修改员工信息成功");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据员工id查询员工信息...");
        // 执行查询方法
        Employee employee = employeeService.getById(id);
        // 返回结果
        return R.success(employee);
    }
}
